Select and Deselect CheckBox using jquery

Demo For Select All and DeSelect All Check Boxes

Selecct All

This is Item 1

This is Item 2

This is Item 3

This is Item 4

This is Item 5

This is Item 6

Do not select this

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(document).ready(function() {
    $('#selecctall').click(function(event) {  //on click
        if(this.checked) { // check select status
            $('.checkbox1').each(function() { //loop through each checkbox
                this.checked = true;  //select all checkboxes with class "checkbox1"            
            });
        }else{
            $('.checkbox1').each(function() { //loop through each checkbox
                this.checked = false; //deselect all checkboxes with class "checkbox1"                    
            });      
        }
    });
 
});
</script>
<table class="">
<tr><td><input type="checkbox" id="selecctall"/> Selecct All</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item1"> This is Item 1</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item2"> This is Item 2</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item3"> This is Item 3</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item4"> This is Item 4</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item5"> This is Item 5</td></tr>
<tr><td><input class="checkbox1" type="checkbox" name="check[]" value="item6"> This is Item 6</td></tr>
<tr><td><input class="checkbox2" type="checkbox" name="check[]" value="item6"> Do not select this</td></tr>
</table>